2 * QEMU S390x KVM implementation
4 * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
5 * Copyright IBM Corp. 2012
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include "qemu/osdep.h"
22 #include <sys/ioctl.h>
24 #include <linux/kvm.h>
25 #include <asm/ptrace.h>
27 #include "qemu-common.h"
30 #include "kvm_s390x.h"
31 #include "sysemu/kvm_int.h"
32 #include "qemu/cutils.h"
33 #include "qapi/error.h"
34 #include "qemu/error-report.h"
35 #include "qemu/timer.h"
36 #include "qemu/units.h"
37 #include "qemu/main-loop.h"
38 #include "qemu/mmap-alloc.h"
40 #include "sysemu/sysemu.h"
41 #include "sysemu/hw_accel.h"
42 #include "sysemu/runstate.h"
43 #include "sysemu/device_tree.h"
44 #include "exec/gdbstub.h"
45 #include "exec/ram_addr.h"
47 #include "hw/s390x/s390-pci-inst.h"
48 #include "hw/s390x/s390-pci-bus.h"
49 #include "hw/s390x/ipl.h"
50 #include "hw/s390x/ebcdic.h"
51 #include "exec/memattrs.h"
52 #include "hw/s390x/s390-virtio-ccw.h"
53 #include "hw/s390x/s390-virtio-hcall.h"
54 #include "hw/s390x/pv.h"
60 #define DPRINTF(fmt, ...) do { \
62 fprintf(stderr, fmt, ## __VA_ARGS__); \
66 #define kvm_vm_check_mem_attr(s, attr) \
67 kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
69 #define IPA0_DIAG 0x8300
70 #define IPA0_SIGP 0xae00
71 #define IPA0_B2 0xb200
72 #define IPA0_B9 0xb900
73 #define IPA0_EB 0xeb00
74 #define IPA0_E3 0xe300
76 #define PRIV_B2_SCLP_CALL 0x20
77 #define PRIV_B2_CSCH 0x30
78 #define PRIV_B2_HSCH 0x31
79 #define PRIV_B2_MSCH 0x32
80 #define PRIV_B2_SSCH 0x33
81 #define PRIV_B2_STSCH 0x34
82 #define PRIV_B2_TSCH 0x35
83 #define PRIV_B2_TPI 0x36
84 #define PRIV_B2_SAL 0x37
85 #define PRIV_B2_RSCH 0x38
86 #define PRIV_B2_STCRW 0x39
87 #define PRIV_B2_STCPS 0x3a
88 #define PRIV_B2_RCHP 0x3b
89 #define PRIV_B2_SCHM 0x3c
90 #define PRIV_B2_CHSC 0x5f
91 #define PRIV_B2_SIGA 0x74
92 #define PRIV_B2_XSCH 0x76
94 #define PRIV_EB_SQBS 0x8a
95 #define PRIV_EB_PCISTB 0xd0
96 #define PRIV_EB_SIC 0xd1
98 #define PRIV_B9_EQBS 0x9c
99 #define PRIV_B9_CLP 0xa0
100 #define PRIV_B9_PCISTG 0xd0
101 #define PRIV_B9_PCILG 0xd2
102 #define PRIV_B9_RPCIT 0xd3
104 #define PRIV_E3_MPCIFC 0xd0
105 #define PRIV_E3_STPCIFC 0xd4
107 #define DIAG_TIMEREVENT 0x288
108 #define DIAG_IPL 0x308
109 #define DIAG_SET_CONTROL_PROGRAM_CODES 0x318
110 #define DIAG_KVM_HYPERCALL 0x500
111 #define DIAG_KVM_BREAKPOINT 0x501
113 #define ICPT_INSTRUCTION 0x04
114 #define ICPT_PROGRAM 0x08
115 #define ICPT_EXT_INT 0x14
116 #define ICPT_WAITPSW 0x1c
117 #define ICPT_SOFT_INTERCEPT 0x24
118 #define ICPT_CPU_STOP 0x28
119 #define ICPT_OPEREXC 0x2c
121 #define ICPT_PV_INSTR 0x68
122 #define ICPT_PV_INSTR_NOTIFICATION 0x6c
124 #define NR_LOCAL_IRQS 32
126 * Needs to be big enough to contain max_cpus emergency signals
127 * and in addition NR_LOCAL_IRQS interrupts
129 #define VCPU_IRQ_BUF_SIZE(max_cpus) (sizeof(struct kvm_s390_irq) * \
130 (max_cpus + NR_LOCAL_IRQS))
132 * KVM does only support memory slots up to KVM_MEM_MAX_NR_PAGES pages
133 * as the dirty bitmap must be managed by bitops that take an int as
134 * position indicator. This would end at an unaligned address
135 * (0x7fffff00000). As future variants might provide larger pages
136 * and to make all addresses properly aligned, let us split at 4TB.
138 #define KVM_SLOT_MAX_BYTES (4UL * TiB)
140 static CPUWatchpoint hw_watchpoint
;
142 * We don't use a list because this structure is also used to transmit the
143 * hardware breakpoints to the kernel.
145 static struct kvm_hw_breakpoint
*hw_breakpoints
;
146 static int nb_hw_breakpoints
;
148 const KVMCapabilityInfo kvm_arch_required_capabilities
[] = {
152 static int cap_sync_regs
;
153 static int cap_async_pf
;
154 static int cap_mem_op
;
155 static int cap_s390_irq
;
158 static int cap_hpage_1m
;
159 static int cap_vcpu_resets
;
160 static int cap_protected
;
162 static int active_cmma
;
164 static int kvm_s390_query_mem_limit(uint64_t *memory_limit
)
166 struct kvm_device_attr attr
= {
167 .group
= KVM_S390_VM_MEM_CTRL
,
168 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
169 .addr
= (uint64_t) memory_limit
,
172 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
175 int kvm_s390_set_mem_limit(uint64_t new_limit
, uint64_t *hw_limit
)
179 struct kvm_device_attr attr
= {
180 .group
= KVM_S390_VM_MEM_CTRL
,
181 .attr
= KVM_S390_VM_MEM_LIMIT_SIZE
,
182 .addr
= (uint64_t) &new_limit
,
185 if (!kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_LIMIT_SIZE
)) {
189 rc
= kvm_s390_query_mem_limit(hw_limit
);
192 } else if (*hw_limit
< new_limit
) {
196 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
199 int kvm_s390_cmma_active(void)
204 static bool kvm_s390_cmma_available(void)
206 static bool initialized
, value
;
210 value
= kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_ENABLE_CMMA
) &&
211 kvm_vm_check_mem_attr(kvm_state
, KVM_S390_VM_MEM_CLR_CMMA
);
216 void kvm_s390_cmma_reset(void)
219 struct kvm_device_attr attr
= {
220 .group
= KVM_S390_VM_MEM_CTRL
,
221 .attr
= KVM_S390_VM_MEM_CLR_CMMA
,
224 if (!kvm_s390_cmma_active()) {
228 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
229 trace_kvm_clear_cmma(rc
);
232 static void kvm_s390_enable_cmma(void)
235 struct kvm_device_attr attr
= {
236 .group
= KVM_S390_VM_MEM_CTRL
,
237 .attr
= KVM_S390_VM_MEM_ENABLE_CMMA
,
241 warn_report("CMM will not be enabled because it is not "
242 "compatible with huge memory backings.");
245 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
247 trace_kvm_enable_cmma(rc
);
250 static void kvm_s390_set_attr(uint64_t attr
)
252 struct kvm_device_attr attribute
= {
253 .group
= KVM_S390_VM_CRYPTO
,
257 int ret
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attribute
);
260 error_report("Failed to set crypto device attribute %lu: %s",
261 attr
, strerror(-ret
));
265 static void kvm_s390_init_aes_kw(void)
267 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_AES_KW
;
269 if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
271 attr
= KVM_S390_VM_CRYPTO_ENABLE_AES_KW
;
274 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
275 kvm_s390_set_attr(attr
);
279 static void kvm_s390_init_dea_kw(void)
281 uint64_t attr
= KVM_S390_VM_CRYPTO_DISABLE_DEA_KW
;
283 if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
285 attr
= KVM_S390_VM_CRYPTO_ENABLE_DEA_KW
;
288 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
289 kvm_s390_set_attr(attr
);
293 void kvm_s390_crypto_reset(void)
295 if (s390_has_feat(S390_FEAT_MSA_EXT_3
)) {
296 kvm_s390_init_aes_kw();
297 kvm_s390_init_dea_kw();
301 void kvm_s390_set_max_pagesize(uint64_t pagesize
, Error
**errp
)
303 if (pagesize
== 4 * KiB
) {
307 if (!hpage_1m_allowed()) {
308 error_setg(errp
, "This QEMU machine does not support huge page "
313 if (pagesize
!= 1 * MiB
) {
314 error_setg(errp
, "Memory backing with 2G pages was specified, "
315 "but KVM does not support this memory backing");
319 if (kvm_vm_enable_cap(kvm_state
, KVM_CAP_S390_HPAGE_1M
, 0)) {
320 error_setg(errp
, "Memory backing with 1M pages was specified, "
321 "but KVM does not support this memory backing");
328 int kvm_s390_get_hpage_1m(void)
333 static void ccw_machine_class_foreach(ObjectClass
*oc
, void *opaque
)
335 MachineClass
*mc
= MACHINE_CLASS(oc
);
337 mc
->default_cpu_type
= S390_CPU_TYPE_NAME("host");
340 int kvm_arch_init(MachineState
*ms
, KVMState
*s
)
342 object_class_foreach(ccw_machine_class_foreach
, TYPE_S390_CCW_MACHINE
,
345 if (!kvm_check_extension(kvm_state
, KVM_CAP_DEVICE_CTRL
)) {
346 error_report("KVM is missing capability KVM_CAP_DEVICE_CTRL - "
347 "please use kernel 3.15 or newer");
350 if (!kvm_check_extension(s
, KVM_CAP_S390_COW
)) {
351 error_report("KVM is missing capability KVM_CAP_S390_COW - "
352 "unsupported environment");
356 cap_sync_regs
= kvm_check_extension(s
, KVM_CAP_SYNC_REGS
);
357 cap_async_pf
= kvm_check_extension(s
, KVM_CAP_ASYNC_PF
);
358 cap_mem_op
= kvm_check_extension(s
, KVM_CAP_S390_MEM_OP
);
359 cap_s390_irq
= kvm_check_extension(s
, KVM_CAP_S390_INJECT_IRQ
);
360 cap_vcpu_resets
= kvm_check_extension(s
, KVM_CAP_S390_VCPU_RESETS
);
361 cap_protected
= kvm_check_extension(s
, KVM_CAP_S390_PROTECTED
);
363 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_SIGP
, 0);
364 kvm_vm_enable_cap(s
, KVM_CAP_S390_VECTOR_REGISTERS
, 0);
365 kvm_vm_enable_cap(s
, KVM_CAP_S390_USER_STSI
, 0);
367 if (kvm_vm_enable_cap(s
, KVM_CAP_S390_RI
, 0) == 0) {
371 if (cpu_model_allowed()) {
372 if (kvm_vm_enable_cap(s
, KVM_CAP_S390_GS
, 0) == 0) {
378 * The migration interface for ais was introduced with kernel 4.13
379 * but the capability itself had been active since 4.12. As migration
380 * support is considered necessary, we only try to enable this for
381 * newer machine types if KVM_CAP_S390_AIS_MIGRATION is available.
383 if (cpu_model_allowed() && kvm_kernel_irqchip_allowed() &&
384 kvm_check_extension(s
, KVM_CAP_S390_AIS_MIGRATION
)) {
385 kvm_vm_enable_cap(s
, KVM_CAP_S390_AIS
, 0);
388 kvm_set_max_memslot_size(KVM_SLOT_MAX_BYTES
);
392 int kvm_arch_irqchip_create(KVMState
*s
)
397 unsigned long kvm_arch_vcpu_id(CPUState
*cpu
)
399 return cpu
->cpu_index
;
402 int kvm_arch_init_vcpu(CPUState
*cs
)
404 unsigned int max_cpus
= MACHINE(qdev_get_machine())->smp
.max_cpus
;
405 S390CPU
*cpu
= S390_CPU(cs
);
406 kvm_s390_set_cpu_state(cpu
, cpu
->env
.cpu_state
);
407 cpu
->irqstate
= g_malloc0(VCPU_IRQ_BUF_SIZE(max_cpus
));
411 int kvm_arch_destroy_vcpu(CPUState
*cs
)
413 S390CPU
*cpu
= S390_CPU(cs
);
415 g_free(cpu
->irqstate
);
416 cpu
->irqstate
= NULL
;
421 static void kvm_s390_reset_vcpu(S390CPU
*cpu
, unsigned long type
)
423 CPUState
*cs
= CPU(cpu
);
426 * The reset call is needed here to reset in-kernel vcpu data that
427 * we can't access directly from QEMU (i.e. with older kernels
428 * which don't support sync_regs/ONE_REG). Before this ioctl
429 * cpu_synchronize_state() is called in common kvm code
432 if (kvm_vcpu_ioctl(cs
, type
)) {
433 error_report("CPU reset failed on CPU %i type %lx",
434 cs
->cpu_index
, type
);
438 void kvm_s390_reset_vcpu_initial(S390CPU
*cpu
)
440 kvm_s390_reset_vcpu(cpu
, KVM_S390_INITIAL_RESET
);
443 void kvm_s390_reset_vcpu_clear(S390CPU
*cpu
)
445 if (cap_vcpu_resets
) {
446 kvm_s390_reset_vcpu(cpu
, KVM_S390_CLEAR_RESET
);
448 kvm_s390_reset_vcpu(cpu
, KVM_S390_INITIAL_RESET
);
452 void kvm_s390_reset_vcpu_normal(S390CPU
*cpu
)
454 if (cap_vcpu_resets
) {
455 kvm_s390_reset_vcpu(cpu
, KVM_S390_NORMAL_RESET
);
459 static int can_sync_regs(CPUState
*cs
, int regs
)
461 return cap_sync_regs
&& (cs
->kvm_run
->kvm_valid_regs
& regs
) == regs
;
464 int kvm_arch_put_registers(CPUState
*cs
, int level
)
466 S390CPU
*cpu
= S390_CPU(cs
);
467 CPUS390XState
*env
= &cpu
->env
;
468 struct kvm_sregs sregs
;
469 struct kvm_regs regs
;
470 struct kvm_fpu fpu
= {};
474 /* always save the PSW and the GPRS*/
475 cs
->kvm_run
->psw_addr
= env
->psw
.addr
;
476 cs
->kvm_run
->psw_mask
= env
->psw
.mask
;
478 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
479 for (i
= 0; i
< 16; i
++) {
480 cs
->kvm_run
->s
.regs
.gprs
[i
] = env
->regs
[i
];
481 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GPRS
;
484 for (i
= 0; i
< 16; i
++) {
485 regs
.gprs
[i
] = env
->regs
[i
];
487 r
= kvm_vcpu_ioctl(cs
, KVM_SET_REGS
, ®s
);
493 if (can_sync_regs(cs
, KVM_SYNC_VRS
)) {
494 for (i
= 0; i
< 32; i
++) {
495 cs
->kvm_run
->s
.regs
.vrs
[i
][0] = env
->vregs
[i
][0];
496 cs
->kvm_run
->s
.regs
.vrs
[i
][1] = env
->vregs
[i
][1];
498 cs
->kvm_run
->s
.regs
.fpc
= env
->fpc
;
499 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_VRS
;
500 } else if (can_sync_regs(cs
, KVM_SYNC_FPRS
)) {
501 for (i
= 0; i
< 16; i
++) {
502 cs
->kvm_run
->s
.regs
.fprs
[i
] = *get_freg(env
, i
);
504 cs
->kvm_run
->s
.regs
.fpc
= env
->fpc
;
505 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_FPRS
;
508 for (i
= 0; i
< 16; i
++) {
509 fpu
.fprs
[i
] = *get_freg(env
, i
);
513 r
= kvm_vcpu_ioctl(cs
, KVM_SET_FPU
, &fpu
);
519 /* Do we need to save more than that? */
520 if (level
== KVM_PUT_RUNTIME_STATE
) {
524 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
525 cs
->kvm_run
->s
.regs
.cputm
= env
->cputm
;
526 cs
->kvm_run
->s
.regs
.ckc
= env
->ckc
;
527 cs
->kvm_run
->s
.regs
.todpr
= env
->todpr
;
528 cs
->kvm_run
->s
.regs
.gbea
= env
->gbea
;
529 cs
->kvm_run
->s
.regs
.pp
= env
->pp
;
530 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ARCH0
;
533 * These ONE_REGS are not protected by a capability. As they are only
534 * necessary for migration we just trace a possible error, but don't
535 * return with an error return code.
537 kvm_set_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
538 kvm_set_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
539 kvm_set_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
540 kvm_set_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
541 kvm_set_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
544 if (can_sync_regs(cs
, KVM_SYNC_RICCB
)) {
545 memcpy(cs
->kvm_run
->s
.regs
.riccb
, env
->riccb
, 64);
546 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_RICCB
;
549 /* pfault parameters */
550 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
551 cs
->kvm_run
->s
.regs
.pft
= env
->pfault_token
;
552 cs
->kvm_run
->s
.regs
.pfs
= env
->pfault_select
;
553 cs
->kvm_run
->s
.regs
.pfc
= env
->pfault_compare
;
554 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PFAULT
;
555 } else if (cap_async_pf
) {
556 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
560 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
564 r
= kvm_set_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
570 /* access registers and control registers*/
571 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
572 for (i
= 0; i
< 16; i
++) {
573 cs
->kvm_run
->s
.regs
.acrs
[i
] = env
->aregs
[i
];
574 cs
->kvm_run
->s
.regs
.crs
[i
] = env
->cregs
[i
];
576 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ACRS
;
577 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_CRS
;
579 for (i
= 0; i
< 16; i
++) {
580 sregs
.acrs
[i
] = env
->aregs
[i
];
581 sregs
.crs
[i
] = env
->cregs
[i
];
583 r
= kvm_vcpu_ioctl(cs
, KVM_SET_SREGS
, &sregs
);
589 if (can_sync_regs(cs
, KVM_SYNC_GSCB
)) {
590 memcpy(cs
->kvm_run
->s
.regs
.gscb
, env
->gscb
, 32);
591 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_GSCB
;
594 if (can_sync_regs(cs
, KVM_SYNC_BPBC
)) {
595 cs
->kvm_run
->s
.regs
.bpbc
= env
->bpbc
;
596 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_BPBC
;
599 if (can_sync_regs(cs
, KVM_SYNC_ETOKEN
)) {
600 cs
->kvm_run
->s
.regs
.etoken
= env
->etoken
;
601 cs
->kvm_run
->s
.regs
.etoken_extension
= env
->etoken_extension
;
602 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_ETOKEN
;
605 if (can_sync_regs(cs
, KVM_SYNC_DIAG318
)) {
606 cs
->kvm_run
->s
.regs
.diag318
= env
->diag318_info
;
607 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_DIAG318
;
610 /* Finally the prefix */
611 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
612 cs
->kvm_run
->s
.regs
.prefix
= env
->psa
;
613 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_PREFIX
;
615 /* prefix is only supported via sync regs */
620 int kvm_arch_get_registers(CPUState
*cs
)
622 S390CPU
*cpu
= S390_CPU(cs
);
623 CPUS390XState
*env
= &cpu
->env
;
624 struct kvm_sregs sregs
;
625 struct kvm_regs regs
;
630 env
->psw
.addr
= cs
->kvm_run
->psw_addr
;
631 env
->psw
.mask
= cs
->kvm_run
->psw_mask
;
634 if (can_sync_regs(cs
, KVM_SYNC_GPRS
)) {
635 for (i
= 0; i
< 16; i
++) {
636 env
->regs
[i
] = cs
->kvm_run
->s
.regs
.gprs
[i
];
639 r
= kvm_vcpu_ioctl(cs
, KVM_GET_REGS
, ®s
);
643 for (i
= 0; i
< 16; i
++) {
644 env
->regs
[i
] = regs
.gprs
[i
];
648 /* The ACRS and CRS */
649 if (can_sync_regs(cs
, KVM_SYNC_ACRS
| KVM_SYNC_CRS
)) {
650 for (i
= 0; i
< 16; i
++) {
651 env
->aregs
[i
] = cs
->kvm_run
->s
.regs
.acrs
[i
];
652 env
->cregs
[i
] = cs
->kvm_run
->s
.regs
.crs
[i
];
655 r
= kvm_vcpu_ioctl(cs
, KVM_GET_SREGS
, &sregs
);
659 for (i
= 0; i
< 16; i
++) {
660 env
->aregs
[i
] = sregs
.acrs
[i
];
661 env
->cregs
[i
] = sregs
.crs
[i
];
665 /* Floating point and vector registers */
666 if (can_sync_regs(cs
, KVM_SYNC_VRS
)) {
667 for (i
= 0; i
< 32; i
++) {
668 env
->vregs
[i
][0] = cs
->kvm_run
->s
.regs
.vrs
[i
][0];
669 env
->vregs
[i
][1] = cs
->kvm_run
->s
.regs
.vrs
[i
][1];
671 env
->fpc
= cs
->kvm_run
->s
.regs
.fpc
;
672 } else if (can_sync_regs(cs
, KVM_SYNC_FPRS
)) {
673 for (i
= 0; i
< 16; i
++) {
674 *get_freg(env
, i
) = cs
->kvm_run
->s
.regs
.fprs
[i
];
676 env
->fpc
= cs
->kvm_run
->s
.regs
.fpc
;
678 r
= kvm_vcpu_ioctl(cs
, KVM_GET_FPU
, &fpu
);
682 for (i
= 0; i
< 16; i
++) {
683 *get_freg(env
, i
) = fpu
.fprs
[i
];
689 if (can_sync_regs(cs
, KVM_SYNC_PREFIX
)) {
690 env
->psa
= cs
->kvm_run
->s
.regs
.prefix
;
693 if (can_sync_regs(cs
, KVM_SYNC_ARCH0
)) {
694 env
->cputm
= cs
->kvm_run
->s
.regs
.cputm
;
695 env
->ckc
= cs
->kvm_run
->s
.regs
.ckc
;
696 env
->todpr
= cs
->kvm_run
->s
.regs
.todpr
;
697 env
->gbea
= cs
->kvm_run
->s
.regs
.gbea
;
698 env
->pp
= cs
->kvm_run
->s
.regs
.pp
;
701 * These ONE_REGS are not protected by a capability. As they are only
702 * necessary for migration we just trace a possible error, but don't
703 * return with an error return code.
705 kvm_get_one_reg(cs
, KVM_REG_S390_CPU_TIMER
, &env
->cputm
);
706 kvm_get_one_reg(cs
, KVM_REG_S390_CLOCK_COMP
, &env
->ckc
);
707 kvm_get_one_reg(cs
, KVM_REG_S390_TODPR
, &env
->todpr
);
708 kvm_get_one_reg(cs
, KVM_REG_S390_GBEA
, &env
->gbea
);
709 kvm_get_one_reg(cs
, KVM_REG_S390_PP
, &env
->pp
);
712 if (can_sync_regs(cs
, KVM_SYNC_RICCB
)) {
713 memcpy(env
->riccb
, cs
->kvm_run
->s
.regs
.riccb
, 64);
716 if (can_sync_regs(cs
, KVM_SYNC_GSCB
)) {
717 memcpy(env
->gscb
, cs
->kvm_run
->s
.regs
.gscb
, 32);
720 if (can_sync_regs(cs
, KVM_SYNC_BPBC
)) {
721 env
->bpbc
= cs
->kvm_run
->s
.regs
.bpbc
;
724 if (can_sync_regs(cs
, KVM_SYNC_ETOKEN
)) {
725 env
->etoken
= cs
->kvm_run
->s
.regs
.etoken
;
726 env
->etoken_extension
= cs
->kvm_run
->s
.regs
.etoken_extension
;
729 /* pfault parameters */
730 if (can_sync_regs(cs
, KVM_SYNC_PFAULT
)) {
731 env
->pfault_token
= cs
->kvm_run
->s
.regs
.pft
;
732 env
->pfault_select
= cs
->kvm_run
->s
.regs
.pfs
;
733 env
->pfault_compare
= cs
->kvm_run
->s
.regs
.pfc
;
734 } else if (cap_async_pf
) {
735 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFTOKEN
, &env
->pfault_token
);
739 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFCOMPARE
, &env
->pfault_compare
);
743 r
= kvm_get_one_reg(cs
, KVM_REG_S390_PFSELECT
, &env
->pfault_select
);
749 if (can_sync_regs(cs
, KVM_SYNC_DIAG318
)) {
750 env
->diag318_info
= cs
->kvm_run
->s
.regs
.diag318
;
756 int kvm_s390_get_clock(uint8_t *tod_high
, uint64_t *tod_low
)
759 struct kvm_device_attr attr
= {
760 .group
= KVM_S390_VM_TOD
,
761 .attr
= KVM_S390_VM_TOD_LOW
,
762 .addr
= (uint64_t)tod_low
,
765 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
770 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
771 attr
.addr
= (uint64_t)tod_high
;
772 return kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
775 int kvm_s390_get_clock_ext(uint8_t *tod_high
, uint64_t *tod_low
)
778 struct kvm_s390_vm_tod_clock gtod
;
779 struct kvm_device_attr attr
= {
780 .group
= KVM_S390_VM_TOD
,
781 .attr
= KVM_S390_VM_TOD_EXT
,
782 .addr
= (uint64_t)>od
,
785 r
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
786 *tod_high
= gtod
.epoch_idx
;
792 int kvm_s390_set_clock(uint8_t tod_high
, uint64_t tod_low
)
795 struct kvm_device_attr attr
= {
796 .group
= KVM_S390_VM_TOD
,
797 .attr
= KVM_S390_VM_TOD_LOW
,
798 .addr
= (uint64_t)&tod_low
,
801 r
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
806 attr
.attr
= KVM_S390_VM_TOD_HIGH
;
807 attr
.addr
= (uint64_t)&tod_high
;
808 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
811 int kvm_s390_set_clock_ext(uint8_t tod_high
, uint64_t tod_low
)
813 struct kvm_s390_vm_tod_clock gtod
= {
814 .epoch_idx
= tod_high
,
817 struct kvm_device_attr attr
= {
818 .group
= KVM_S390_VM_TOD
,
819 .attr
= KVM_S390_VM_TOD_EXT
,
820 .addr
= (uint64_t)>od
,
823 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
828 * @addr: the logical start address in guest memory
829 * @ar: the access register number
830 * @hostbuf: buffer in host memory. NULL = do only checks w/o copying
831 * @len: length that should be transferred
832 * @is_write: true = write, false = read
833 * Returns: 0 on success, non-zero if an exception or error occurred
835 * Use KVM ioctl to read/write from/to guest memory. An access exception
836 * is injected into the vCPU in case of translation errors.
838 int kvm_s390_mem_op(S390CPU
*cpu
, vaddr addr
, uint8_t ar
, void *hostbuf
,
839 int len
, bool is_write
)
841 struct kvm_s390_mem_op mem_op
= {
843 .flags
= KVM_S390_MEMOP_F_INJECT_EXCEPTION
,
845 .op
= is_write
? KVM_S390_MEMOP_LOGICAL_WRITE
846 : KVM_S390_MEMOP_LOGICAL_READ
,
847 .buf
= (uint64_t)hostbuf
,
856 mem_op
.flags
|= KVM_S390_MEMOP_F_CHECK_ONLY
;
859 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_S390_MEM_OP
, &mem_op
);
861 warn_report("KVM_S390_MEM_OP failed: %s", strerror(-ret
));
866 int kvm_s390_mem_op_pv(S390CPU
*cpu
, uint64_t offset
, void *hostbuf
,
867 int len
, bool is_write
)
869 struct kvm_s390_mem_op mem_op
= {
870 .sida_offset
= offset
,
872 .op
= is_write
? KVM_S390_MEMOP_SIDA_WRITE
873 : KVM_S390_MEMOP_SIDA_READ
,
874 .buf
= (uint64_t)hostbuf
,
878 if (!cap_mem_op
|| !cap_protected
) {
882 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_S390_MEM_OP
, &mem_op
);
884 error_report("KVM_S390_MEM_OP failed: %s", strerror(-ret
));
890 static uint8_t const *sw_bp_inst
;
891 static uint8_t sw_bp_ilen
;
893 static void determine_sw_breakpoint_instr(void)
895 /* DIAG 501 is used for sw breakpoints with old kernels */
896 static const uint8_t diag_501
[] = {0x83, 0x24, 0x05, 0x01};
897 /* Instruction 0x0000 is used for sw breakpoints with recent kernels */
898 static const uint8_t instr_0x0000
[] = {0x00, 0x00};
903 if (kvm_vm_enable_cap(kvm_state
, KVM_CAP_S390_USER_INSTR0
, 0)) {
904 sw_bp_inst
= diag_501
;
905 sw_bp_ilen
= sizeof(diag_501
);
906 DPRINTF("KVM: will use 4-byte sw breakpoints.\n");
908 sw_bp_inst
= instr_0x0000
;
909 sw_bp_ilen
= sizeof(instr_0x0000
);
910 DPRINTF("KVM: will use 2-byte sw breakpoints.\n");
914 int kvm_arch_insert_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
916 determine_sw_breakpoint_instr();
918 if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
920 cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)sw_bp_inst
, sw_bp_ilen
, 1)) {
926 int kvm_arch_remove_sw_breakpoint(CPUState
*cs
, struct kvm_sw_breakpoint
*bp
)
930 if (cpu_memory_rw_debug(cs
, bp
->pc
, t
, sw_bp_ilen
, 0)) {
932 } else if (memcmp(t
, sw_bp_inst
, sw_bp_ilen
)) {
934 } else if (cpu_memory_rw_debug(cs
, bp
->pc
, (uint8_t *)&bp
->saved_insn
,
942 static struct kvm_hw_breakpoint
*find_hw_breakpoint(target_ulong addr
,
947 for (n
= 0; n
< nb_hw_breakpoints
; n
++) {
948 if (hw_breakpoints
[n
].addr
== addr
&& hw_breakpoints
[n
].type
== type
&&
949 (hw_breakpoints
[n
].len
== len
|| len
== -1)) {
950 return &hw_breakpoints
[n
];
957 static int insert_hw_breakpoint(target_ulong addr
, int len
, int type
)
961 if (find_hw_breakpoint(addr
, len
, type
)) {
965 size
= (nb_hw_breakpoints
+ 1) * sizeof(struct kvm_hw_breakpoint
);
967 if (!hw_breakpoints
) {
968 nb_hw_breakpoints
= 0;
969 hw_breakpoints
= (struct kvm_hw_breakpoint
*)g_try_malloc(size
);
972 (struct kvm_hw_breakpoint
*)g_try_realloc(hw_breakpoints
, size
);
975 if (!hw_breakpoints
) {
976 nb_hw_breakpoints
= 0;
980 hw_breakpoints
[nb_hw_breakpoints
].addr
= addr
;
981 hw_breakpoints
[nb_hw_breakpoints
].len
= len
;
982 hw_breakpoints
[nb_hw_breakpoints
].type
= type
;
989 int kvm_arch_insert_hw_breakpoint(target_ulong addr
,
990 target_ulong len
, int type
)
993 case GDB_BREAKPOINT_HW
:
996 case GDB_WATCHPOINT_WRITE
:
1000 type
= KVM_HW_WP_WRITE
;
1005 return insert_hw_breakpoint(addr
, len
, type
);
1008 int kvm_arch_remove_hw_breakpoint(target_ulong addr
,
1009 target_ulong len
, int type
)
1012 struct kvm_hw_breakpoint
*bp
= find_hw_breakpoint(addr
, len
, type
);
1018 nb_hw_breakpoints
--;
1019 if (nb_hw_breakpoints
> 0) {
1021 * In order to trim the array, move the last element to the position to
1022 * be removed - if necessary.
1024 if (bp
!= &hw_breakpoints
[nb_hw_breakpoints
]) {
1025 *bp
= hw_breakpoints
[nb_hw_breakpoints
];
1027 size
= nb_hw_breakpoints
* sizeof(struct kvm_hw_breakpoint
);
1029 (struct kvm_hw_breakpoint
*)g_realloc(hw_breakpoints
, size
);
1031 g_free(hw_breakpoints
);
1032 hw_breakpoints
= NULL
;
1038 void kvm_arch_remove_all_hw_breakpoints(void)
1040 nb_hw_breakpoints
= 0;
1041 g_free(hw_breakpoints
);
1042 hw_breakpoints
= NULL
;
1045 void kvm_arch_update_guest_debug(CPUState
*cpu
, struct kvm_guest_debug
*dbg
)
1049 if (nb_hw_breakpoints
> 0) {
1050 dbg
->arch
.nr_hw_bp
= nb_hw_breakpoints
;
1051 dbg
->arch
.hw_bp
= hw_breakpoints
;
1053 for (i
= 0; i
< nb_hw_breakpoints
; ++i
) {
1054 hw_breakpoints
[i
].phys_addr
= s390_cpu_get_phys_addr_debug(cpu
,
1055 hw_breakpoints
[i
].addr
);
1057 dbg
->control
|= KVM_GUESTDBG_ENABLE
| KVM_GUESTDBG_USE_HW_BP
;
1059 dbg
->arch
.nr_hw_bp
= 0;
1060 dbg
->arch
.hw_bp
= NULL
;
1064 void kvm_arch_pre_run(CPUState
*cpu
, struct kvm_run
*run
)
1068 MemTxAttrs
kvm_arch_post_run(CPUState
*cs
, struct kvm_run
*run
)
1070 return MEMTXATTRS_UNSPECIFIED
;
1073 int kvm_arch_process_async_events(CPUState
*cs
)
1078 static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq
*irq
,
1079 struct kvm_s390_interrupt
*interrupt
)
1083 interrupt
->type
= irq
->type
;
1084 switch (irq
->type
) {
1085 case KVM_S390_INT_VIRTIO
:
1086 interrupt
->parm
= irq
->u
.ext
.ext_params
;
1088 case KVM_S390_INT_PFAULT_INIT
:
1089 case KVM_S390_INT_PFAULT_DONE
:
1090 interrupt
->parm64
= irq
->u
.ext
.ext_params2
;
1092 case KVM_S390_PROGRAM_INT
:
1093 interrupt
->parm
= irq
->u
.pgm
.code
;
1095 case KVM_S390_SIGP_SET_PREFIX
:
1096 interrupt
->parm
= irq
->u
.prefix
.address
;
1098 case KVM_S390_INT_SERVICE
:
1099 interrupt
->parm
= irq
->u
.ext
.ext_params
;
1102 interrupt
->parm
= irq
->u
.mchk
.cr14
;
1103 interrupt
->parm64
= irq
->u
.mchk
.mcic
;
1105 case KVM_S390_INT_EXTERNAL_CALL
:
1106 interrupt
->parm
= irq
->u
.extcall
.code
;
1108 case KVM_S390_INT_EMERGENCY
:
1109 interrupt
->parm
= irq
->u
.emerg
.code
;
1111 case KVM_S390_SIGP_STOP
:
1112 case KVM_S390_RESTART
:
1113 break; /* These types have no parameters */
1114 case KVM_S390_INT_IO_MIN
...KVM_S390_INT_IO_MAX
:
1115 interrupt
->parm
= irq
->u
.io
.subchannel_id
<< 16;
1116 interrupt
->parm
|= irq
->u
.io
.subchannel_nr
;
1117 interrupt
->parm64
= (uint64_t)irq
->u
.io
.io_int_parm
<< 32;
1118 interrupt
->parm64
|= irq
->u
.io
.io_int_word
;
1127 static void inject_vcpu_irq_legacy(CPUState
*cs
, struct kvm_s390_irq
*irq
)
1129 struct kvm_s390_interrupt kvmint
= {};
1132 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
1134 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
1138 r
= kvm_vcpu_ioctl(cs
, KVM_S390_INTERRUPT
, &kvmint
);
1140 fprintf(stderr
, "KVM failed to inject interrupt\n");
1145 void kvm_s390_vcpu_interrupt(S390CPU
*cpu
, struct kvm_s390_irq
*irq
)
1147 CPUState
*cs
= CPU(cpu
);
1151 r
= kvm_vcpu_ioctl(cs
, KVM_S390_IRQ
, irq
);
1155 error_report("KVM failed to inject interrupt %llx", irq
->type
);
1159 inject_vcpu_irq_legacy(cs
, irq
);
1162 void kvm_s390_floating_interrupt_legacy(struct kvm_s390_irq
*irq
)
1164 struct kvm_s390_interrupt kvmint
= {};
1167 r
= s390_kvm_irq_to_interrupt(irq
, &kvmint
);
1169 fprintf(stderr
, "%s called with bogus interrupt\n", __func__
);
1173 r
= kvm_vm_ioctl(kvm_state
, KVM_S390_INTERRUPT
, &kvmint
);
1175 fprintf(stderr
, "KVM failed to inject interrupt\n");
1180 void kvm_s390_program_interrupt(S390CPU
*cpu
, uint16_t code
)
1182 struct kvm_s390_irq irq
= {
1183 .type
= KVM_S390_PROGRAM_INT
,
1186 qemu_log_mask(CPU_LOG_INT
, "program interrupt at %#" PRIx64
"\n",
1188 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1191 void kvm_s390_access_exception(S390CPU
*cpu
, uint16_t code
, uint64_t te_code
)
1193 struct kvm_s390_irq irq
= {
1194 .type
= KVM_S390_PROGRAM_INT
,
1196 .u
.pgm
.trans_exc_code
= te_code
,
1197 .u
.pgm
.exc_access_id
= te_code
& 3,
1200 kvm_s390_vcpu_interrupt(cpu
, &irq
);
1203 static void kvm_sclp_service_call(S390CPU
*cpu
, struct kvm_run
*run
,
1206 CPUS390XState
*env
= &cpu
->env
;
1211 sccb
= env
->regs
[ipbh0
& 0xf];
1212 code
= env
->regs
[(ipbh0
& 0xf0) >> 4];
1214 switch (run
->s390_sieic
.icptcode
) {
1215 case ICPT_PV_INSTR_NOTIFICATION
:
1216 g_assert(s390_is_pv());
1217 /* The notification intercepts are currently handled by KVM */
1218 error_report("unexpected SCLP PV notification");
1222 g_assert(s390_is_pv());
1223 sclp_service_call_protected(env
, sccb
, code
);
1224 /* Setting the CC is done by the Ultravisor. */
1226 case ICPT_INSTRUCTION
:
1227 g_assert(!s390_is_pv());
1228 r
= sclp_service_call(env
, sccb
, code
);
1230 kvm_s390_program_interrupt(cpu
, -r
);
1237 static int handle_b2(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1239 CPUS390XState
*env
= &cpu
->env
;
1241 uint16_t ipbh0
= (run
->s390_sieic
.ipb
& 0xffff0000) >> 16;
1245 ioinst_handle_xsch(cpu
, env
->regs
[1], RA_IGNORED
);
1248 ioinst_handle_csch(cpu
, env
->regs
[1], RA_IGNORED
);
1251 ioinst_handle_hsch(cpu
, env
->regs
[1], RA_IGNORED
);
1254 ioinst_handle_msch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1257 ioinst_handle_ssch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1260 ioinst_handle_stcrw(cpu
, run
->s390_sieic
.ipb
, RA_IGNORED
);
1263 ioinst_handle_stsch(cpu
, env
->regs
[1], run
->s390_sieic
.ipb
, RA_IGNORED
);
1266 /* We should only get tsch via KVM_EXIT_S390_TSCH. */
1267 fprintf(stderr
, "Spurious tsch intercept\n");
1270 ioinst_handle_chsc(cpu
, run
->s390_sieic
.ipb
, RA_IGNORED
);
1273 /* This should have been handled by kvm already. */
1274 fprintf(stderr
, "Spurious tpi intercept\n");
1277 ioinst_handle_schm(cpu
, env
->regs
[1], env
->regs
[2],
1278 run
->s390_sieic
.ipb
, RA_IGNORED
);
1281 ioinst_handle_rsch(cpu
, env
->regs
[1], RA_IGNORED
);
1284 ioinst_handle_rchp(cpu
, env
->regs
[1], RA_IGNORED
);
1287 /* We do not provide this instruction, it is suppressed. */
1290 ioinst_handle_sal(cpu
, env
->regs
[1], RA_IGNORED
);
1293 /* Not provided, set CC = 3 for subchannel not operational */
1296 case PRIV_B2_SCLP_CALL
:
1297 kvm_sclp_service_call(cpu
, run
, ipbh0
);
1301 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1
);
1308 static uint64_t get_base_disp_rxy(S390CPU
*cpu
, struct kvm_run
*run
,
1311 CPUS390XState
*env
= &cpu
->env
;
1312 uint32_t x2
= (run
->s390_sieic
.ipa
& 0x000f);
1313 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1314 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1315 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1317 if (disp2
& 0x80000) {
1318 disp2
+= 0xfff00000;
1324 return (base2
? env
->regs
[base2
] : 0) +
1325 (x2
? env
->regs
[x2
] : 0) + (long)(int)disp2
;
1328 static uint64_t get_base_disp_rsy(S390CPU
*cpu
, struct kvm_run
*run
,
1331 CPUS390XState
*env
= &cpu
->env
;
1332 uint32_t base2
= run
->s390_sieic
.ipb
>> 28;
1333 uint32_t disp2
= ((run
->s390_sieic
.ipb
& 0x0fff0000) >> 16) +
1334 ((run
->s390_sieic
.ipb
& 0xff00) << 4);
1336 if (disp2
& 0x80000) {
1337 disp2
+= 0xfff00000;
1343 return (base2
? env
->regs
[base2
] : 0) + (long)(int)disp2
;
1346 static int kvm_clp_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1348 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1350 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1351 return clp_service_call(cpu
, r2
, RA_IGNORED
);
1357 static int kvm_pcilg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1359 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1360 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1362 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1363 return pcilg_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1369 static int kvm_pcistg_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1371 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1372 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1374 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1375 return pcistg_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1381 static int kvm_stpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1383 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1387 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1388 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1390 return stpcifc_service_call(cpu
, r1
, fiba
, ar
, RA_IGNORED
);
1396 static int kvm_sic_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1398 CPUS390XState
*env
= &cpu
->env
;
1399 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1400 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1405 mode
= env
->regs
[r1
] & 0xffff;
1406 isc
= (env
->regs
[r3
] >> 27) & 0x7;
1407 r
= css_do_sic(env
, isc
, mode
);
1409 kvm_s390_program_interrupt(cpu
, -r
);
1415 static int kvm_rpcit_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1417 uint8_t r1
= (run
->s390_sieic
.ipb
& 0x00f00000) >> 20;
1418 uint8_t r2
= (run
->s390_sieic
.ipb
& 0x000f0000) >> 16;
1420 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1421 return rpcit_service_call(cpu
, r1
, r2
, RA_IGNORED
);
1427 static int kvm_pcistb_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1429 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1430 uint8_t r3
= run
->s390_sieic
.ipa
& 0x000f;
1434 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1435 gaddr
= get_base_disp_rsy(cpu
, run
, &ar
);
1437 return pcistb_service_call(cpu
, r1
, r3
, gaddr
, ar
, RA_IGNORED
);
1443 static int kvm_mpcifc_service_call(S390CPU
*cpu
, struct kvm_run
*run
)
1445 uint8_t r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1449 if (s390_has_feat(S390_FEAT_ZPCI
)) {
1450 fiba
= get_base_disp_rxy(cpu
, run
, &ar
);
1452 return mpcifc_service_call(cpu
, r1
, fiba
, ar
, RA_IGNORED
);
1458 static int handle_b9(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipa1
)
1464 r
= kvm_clp_service_call(cpu
, run
);
1466 case PRIV_B9_PCISTG
:
1467 r
= kvm_pcistg_service_call(cpu
, run
);
1470 r
= kvm_pcilg_service_call(cpu
, run
);
1473 r
= kvm_rpcit_service_call(cpu
, run
);
1476 /* just inject exception */
1481 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1
);
1488 static int handle_eb(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1493 case PRIV_EB_PCISTB
:
1494 r
= kvm_pcistb_service_call(cpu
, run
);
1497 r
= kvm_sic_service_call(cpu
, run
);
1500 /* just inject exception */
1505 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl
);
1512 static int handle_e3(S390CPU
*cpu
, struct kvm_run
*run
, uint8_t ipbl
)
1517 case PRIV_E3_MPCIFC
:
1518 r
= kvm_mpcifc_service_call(cpu
, run
);
1520 case PRIV_E3_STPCIFC
:
1521 r
= kvm_stpcifc_service_call(cpu
, run
);
1525 DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl
);
1532 static int handle_hypercall(S390CPU
*cpu
, struct kvm_run
*run
)
1534 CPUS390XState
*env
= &cpu
->env
;
1537 ret
= s390_virtio_hypercall(env
);
1538 if (ret
== -EINVAL
) {
1539 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1546 static void kvm_handle_diag_288(S390CPU
*cpu
, struct kvm_run
*run
)
1551 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1552 r3
= run
->s390_sieic
.ipa
& 0x000f;
1553 rc
= handle_diag_288(&cpu
->env
, r1
, r3
);
1555 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1559 static void kvm_handle_diag_308(S390CPU
*cpu
, struct kvm_run
*run
)
1563 r1
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1564 r3
= run
->s390_sieic
.ipa
& 0x000f;
1565 handle_diag_308(&cpu
->env
, r1
, r3
, RA_IGNORED
);
1568 static int handle_sw_breakpoint(S390CPU
*cpu
, struct kvm_run
*run
)
1570 CPUS390XState
*env
= &cpu
->env
;
1573 pc
= env
->psw
.addr
- sw_bp_ilen
;
1574 if (kvm_find_sw_breakpoint(CPU(cpu
), pc
)) {
1582 void kvm_s390_set_diag318(CPUState
*cs
, uint64_t diag318_info
)
1584 CPUS390XState
*env
= &S390_CPU(cs
)->env
;
1586 /* Feat bit is set only if KVM supports sync for diag318 */
1587 if (s390_has_feat(S390_FEAT_DIAG_318
)) {
1588 env
->diag318_info
= diag318_info
;
1589 cs
->kvm_run
->s
.regs
.diag318
= diag318_info
;
1590 cs
->kvm_run
->kvm_dirty_regs
|= KVM_SYNC_DIAG318
;
1594 static void handle_diag_318(S390CPU
*cpu
, struct kvm_run
*run
)
1596 uint64_t reg
= (run
->s390_sieic
.ipa
& 0x00f0) >> 4;
1597 uint64_t diag318_info
= run
->s
.regs
.gprs
[reg
];
1601 * DIAG 318 can only be enabled with KVM support. As such, let's
1602 * ensure a guest cannot execute this instruction erroneously.
1604 if (!s390_has_feat(S390_FEAT_DIAG_318
)) {
1605 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1610 run_on_cpu(t
, s390_do_cpu_set_diag318
,
1611 RUN_ON_CPU_HOST_ULONG(diag318_info
));
1615 #define DIAG_KVM_CODE_MASK 0x000000000000ffff
1617 static int handle_diag(S390CPU
*cpu
, struct kvm_run
*run
, uint32_t ipb
)
1623 * For any diagnose call we support, bits 48-63 of the resulting
1624 * address specify the function code; the remainder is ignored.
1626 func_code
= decode_basedisp_rs(&cpu
->env
, ipb
, NULL
) & DIAG_KVM_CODE_MASK
;
1627 switch (func_code
) {
1628 case DIAG_TIMEREVENT
:
1629 kvm_handle_diag_288(cpu
, run
);
1632 kvm_handle_diag_308(cpu
, run
);
1634 case DIAG_SET_CONTROL_PROGRAM_CODES
:
1635 handle_diag_318(cpu
, run
);
1637 case DIAG_KVM_HYPERCALL
:
1638 r
= handle_hypercall(cpu
, run
);
1640 case DIAG_KVM_BREAKPOINT
:
1641 r
= handle_sw_breakpoint(cpu
, run
);
1644 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code
);
1645 kvm_s390_program_interrupt(cpu
, PGM_SPECIFICATION
);
1652 static int kvm_s390_handle_sigp(S390CPU
*cpu
, uint8_t ipa1
, uint32_t ipb
)
1654 CPUS390XState
*env
= &cpu
->env
;
1655 const uint8_t r1
= ipa1
>> 4;
1656 const uint8_t r3
= ipa1
& 0x0f;
1660 /* get order code */
1661 order
= decode_basedisp_rs(env
, ipb
, NULL
) & SIGP_ORDER_MASK
;
1663 ret
= handle_sigp(env
, order
, r1
, r3
);
1668 static int handle_instruction(S390CPU
*cpu
, struct kvm_run
*run
)
1670 unsigned int ipa0
= (run
->s390_sieic
.ipa
& 0xff00);
1671 uint8_t ipa1
= run
->s390_sieic
.ipa
& 0x00ff;
1674 DPRINTF("handle_instruction 0x%x 0x%x\n",
1675 run
->s390_sieic
.ipa
, run
->s390_sieic
.ipb
);
1678 r
= handle_b2(cpu
, run
, ipa1
);
1681 r
= handle_b9(cpu
, run
, ipa1
);
1684 r
= handle_eb(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1687 r
= handle_e3(cpu
, run
, run
->s390_sieic
.ipb
& 0xff);
1690 r
= handle_diag(cpu
, run
, run
->s390_sieic
.ipb
);
1693 r
= kvm_s390_handle_sigp(cpu
, ipa1
, run
->s390_sieic
.ipb
);
1699 kvm_s390_program_interrupt(cpu
, PGM_OPERATION
);
1705 static void unmanageable_intercept(S390CPU
*cpu
, S390CrashReason reason
,
1708 CPUState
*cs
= CPU(cpu
);
1711 cpu
->env
.crash_reason
= reason
;
1712 qemu_system_guest_panicked(cpu_get_crash_info(cs
));
1715 /* try to detect pgm check loops */
1716 static int handle_oper_loop(S390CPU
*cpu
, struct kvm_run
*run
)
1718 CPUState
*cs
= CPU(cpu
);
1721 newpsw
.mask
= ldq_phys(cs
->as
, cpu
->env
.psa
+
1722 offsetof(LowCore
, program_new_psw
));
1723 newpsw
.addr
= ldq_phys(cs
->as
, cpu
->env
.psa
+
1724 offsetof(LowCore
, program_new_psw
) + 8);
1725 oldpsw
.mask
= run
->psw_mask
;
1726 oldpsw
.addr
= run
->psw_addr
;
1728 * Avoid endless loops of operation exceptions, if the pgm new
1729 * PSW will cause a new operation exception.
1730 * The heuristic checks if the pgm new psw is within 6 bytes before
1731 * the faulting psw address (with same DAT, AS settings) and the
1732 * new psw is not a wait psw and the fault was not triggered by
1733 * problem state. In that case go into crashed state.
1736 if (oldpsw
.addr
- newpsw
.addr
<= 6 &&
1737 !(newpsw
.mask
& PSW_MASK_WAIT
) &&
1738 !(oldpsw
.mask
& PSW_MASK_PSTATE
) &&
1739 (newpsw
.mask
& PSW_MASK_ASC
) == (oldpsw
.mask
& PSW_MASK_ASC
) &&
1740 (newpsw
.mask
& PSW_MASK_DAT
) == (oldpsw
.mask
& PSW_MASK_DAT
)) {
1741 unmanageable_intercept(cpu
, S390_CRASH_REASON_OPINT_LOOP
,
1742 offsetof(LowCore
, program_new_psw
));
1748 static int handle_intercept(S390CPU
*cpu
)
1750 CPUState
*cs
= CPU(cpu
);
1751 struct kvm_run
*run
= cs
->kvm_run
;
1752 int icpt_code
= run
->s390_sieic
.icptcode
;
1755 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code
, (long)run
->psw_addr
);
1756 switch (icpt_code
) {
1757 case ICPT_INSTRUCTION
:
1759 case ICPT_PV_INSTR_NOTIFICATION
:
1760 r
= handle_instruction(cpu
, run
);
1763 unmanageable_intercept(cpu
, S390_CRASH_REASON_PGMINT_LOOP
,
1764 offsetof(LowCore
, program_new_psw
));
1768 unmanageable_intercept(cpu
, S390_CRASH_REASON_EXTINT_LOOP
,
1769 offsetof(LowCore
, external_new_psw
));
1773 /* disabled wait, since enabled wait is handled in kernel */
1774 s390_handle_wait(cpu
);
1778 do_stop_interrupt(&cpu
->env
);
1782 /* check for break points */
1783 r
= handle_sw_breakpoint(cpu
, run
);
1785 /* Then check for potential pgm check loops */
1786 r
= handle_oper_loop(cpu
, run
);
1788 kvm_s390_program_interrupt(cpu
, PGM_OPERATION
);
1792 case ICPT_SOFT_INTERCEPT
:
1793 fprintf(stderr
, "KVM unimplemented icpt SOFT\n");
1797 fprintf(stderr
, "KVM unimplemented icpt IO\n");
1801 fprintf(stderr
, "Unknown intercept code: %d\n", icpt_code
);
1809 static int handle_tsch(S390CPU
*cpu
)
1811 CPUState
*cs
= CPU(cpu
);
1812 struct kvm_run
*run
= cs
->kvm_run
;
1815 ret
= ioinst_handle_tsch(cpu
, cpu
->env
.regs
[1], run
->s390_tsch
.ipb
,
1820 * If an I/O interrupt had been dequeued, we have to reinject it.
1822 if (run
->s390_tsch
.dequeued
) {
1823 s390_io_interrupt(run
->s390_tsch
.subchannel_id
,
1824 run
->s390_tsch
.subchannel_nr
,
1825 run
->s390_tsch
.io_int_parm
,
1826 run
->s390_tsch
.io_int_word
);
1833 static void insert_stsi_3_2_2(S390CPU
*cpu
, __u64 addr
, uint8_t ar
)
1835 const MachineState
*ms
= MACHINE(qdev_get_machine());
1836 uint16_t conf_cpus
= 0, reserved_cpus
= 0;
1841 s390_cpu_pv_mem_read(cpu
, 0, &sysib
, sizeof(sysib
));
1842 } else if (s390_cpu_virt_mem_read(cpu
, addr
, ar
, &sysib
, sizeof(sysib
))) {
1845 /* Shift the stack of Extended Names to prepare for our own data */
1846 memmove(&sysib
.ext_names
[1], &sysib
.ext_names
[0],
1847 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- 1));
1848 /* First virt level, that doesn't provide Ext Names delimits stack. It is
1849 * assumed it's not capable of managing Extended Names for lower levels.
1851 for (del
= 1; del
< sysib
.count
; del
++) {
1852 if (!sysib
.vm
[del
].ext_name_encoding
|| !sysib
.ext_names
[del
][0]) {
1856 if (del
< sysib
.count
) {
1857 memset(sysib
.ext_names
[del
], 0,
1858 sizeof(sysib
.ext_names
[0]) * (sysib
.count
- del
));
1861 /* count the cpus and split them into configured and reserved ones */
1862 for (i
= 0; i
< ms
->possible_cpus
->len
; i
++) {
1863 if (ms
->possible_cpus
->cpus
[i
].cpu
) {
1869 sysib
.vm
[0].total_cpus
= conf_cpus
+ reserved_cpus
;
1870 sysib
.vm
[0].conf_cpus
= conf_cpus
;
1871 sysib
.vm
[0].reserved_cpus
= reserved_cpus
;
1873 /* Insert short machine name in EBCDIC, padded with blanks */
1875 memset(sysib
.vm
[0].name
, 0x40, sizeof(sysib
.vm
[0].name
));
1876 ebcdic_put(sysib
.vm
[0].name
, qemu_name
, MIN(sizeof(sysib
.vm
[0].name
),
1877 strlen(qemu_name
)));
1879 sysib
.vm
[0].ext_name_encoding
= 2; /* 2 = UTF-8 */
1880 /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's
1881 * considered by s390 as not capable of providing any Extended Name.
1882 * Therefore if no name was specified on qemu invocation, we go with the
1883 * same "KVMguest" default, which KVM has filled into short name field.
1885 strpadcpy((char *)sysib
.ext_names
[0],
1886 sizeof(sysib
.ext_names
[0]),
1887 qemu_name
?: "KVMguest", '\0');
1890 memcpy(sysib
.vm
[0].uuid
, &qemu_uuid
, sizeof(sysib
.vm
[0].uuid
));
1893 s390_cpu_pv_mem_write(cpu
, 0, &sysib
, sizeof(sysib
));
1895 s390_cpu_virt_mem_write(cpu
, addr
, ar
, &sysib
, sizeof(sysib
));
1899 static int handle_stsi(S390CPU
*cpu
)
1901 CPUState
*cs
= CPU(cpu
);
1902 struct kvm_run
*run
= cs
->kvm_run
;
1904 switch (run
->s390_stsi
.fc
) {
1906 if (run
->s390_stsi
.sel1
!= 2 || run
->s390_stsi
.sel2
!= 2) {
1909 /* Only sysib 3.2.2 needs post-handling for now. */
1910 insert_stsi_3_2_2(cpu
, run
->s390_stsi
.addr
, run
->s390_stsi
.ar
);
1917 static int kvm_arch_handle_debug_exit(S390CPU
*cpu
)
1919 CPUState
*cs
= CPU(cpu
);
1920 struct kvm_run
*run
= cs
->kvm_run
;
1923 struct kvm_debug_exit_arch
*arch_info
= &run
->debug
.arch
;
1925 switch (arch_info
->type
) {
1926 case KVM_HW_WP_WRITE
:
1927 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1928 cs
->watchpoint_hit
= &hw_watchpoint
;
1929 hw_watchpoint
.vaddr
= arch_info
->addr
;
1930 hw_watchpoint
.flags
= BP_MEM_WRITE
;
1935 if (find_hw_breakpoint(arch_info
->addr
, -1, arch_info
->type
)) {
1939 case KVM_SINGLESTEP
:
1940 if (cs
->singlestep_enabled
) {
1951 int kvm_arch_handle_exit(CPUState
*cs
, struct kvm_run
*run
)
1953 S390CPU
*cpu
= S390_CPU(cs
);
1956 qemu_mutex_lock_iothread();
1958 kvm_cpu_synchronize_state(cs
);
1960 switch (run
->exit_reason
) {
1961 case KVM_EXIT_S390_SIEIC
:
1962 ret
= handle_intercept(cpu
);
1964 case KVM_EXIT_S390_RESET
:
1965 s390_ipl_reset_request(cs
, S390_RESET_REIPL
);
1967 case KVM_EXIT_S390_TSCH
:
1968 ret
= handle_tsch(cpu
);
1970 case KVM_EXIT_S390_STSI
:
1971 ret
= handle_stsi(cpu
);
1973 case KVM_EXIT_DEBUG
:
1974 ret
= kvm_arch_handle_debug_exit(cpu
);
1977 fprintf(stderr
, "Unknown KVM exit: %d\n", run
->exit_reason
);
1980 qemu_mutex_unlock_iothread();
1983 ret
= EXCP_INTERRUPT
;
1988 bool kvm_arch_stop_on_emulation_error(CPUState
*cpu
)
1993 void kvm_s390_enable_css_support(S390CPU
*cpu
)
1997 /* Activate host kernel channel subsystem support. */
1998 r
= kvm_vcpu_enable_cap(CPU(cpu
), KVM_CAP_S390_CSS_SUPPORT
, 0);
2002 void kvm_arch_init_irq_routing(KVMState
*s
)
2005 * Note that while irqchip capabilities generally imply that cpustates
2006 * are handled in-kernel, it is not true for s390 (yet); therefore, we
2007 * have to override the common code kvm_halt_in_kernel_allowed setting.
2009 if (kvm_check_extension(s
, KVM_CAP_IRQ_ROUTING
)) {
2010 kvm_gsi_routing_allowed
= true;
2011 kvm_halt_in_kernel_allowed
= false;
2015 int kvm_s390_assign_subch_ioeventfd(EventNotifier
*notifier
, uint32_t sch
,
2016 int vq
, bool assign
)
2018 struct kvm_ioeventfd kick
= {
2019 .flags
= KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY
|
2020 KVM_IOEVENTFD_FLAG_DATAMATCH
,
2021 .fd
= event_notifier_get_fd(notifier
),
2026 trace_kvm_assign_subch_ioeventfd(kick
.fd
, kick
.addr
, assign
,
2028 if (!kvm_check_extension(kvm_state
, KVM_CAP_IOEVENTFD
)) {
2032 kick
.flags
|= KVM_IOEVENTFD_FLAG_DEASSIGN
;
2034 return kvm_vm_ioctl(kvm_state
, KVM_IOEVENTFD
, &kick
);
2037 int kvm_s390_get_ri(void)
2042 int kvm_s390_get_gs(void)
2047 int kvm_s390_set_cpu_state(S390CPU
*cpu
, uint8_t cpu_state
)
2049 struct kvm_mp_state mp_state
= {};
2052 /* the kvm part might not have been initialized yet */
2053 if (CPU(cpu
)->kvm_state
== NULL
) {
2057 switch (cpu_state
) {
2058 case S390_CPU_STATE_STOPPED
:
2059 mp_state
.mp_state
= KVM_MP_STATE_STOPPED
;
2061 case S390_CPU_STATE_CHECK_STOP
:
2062 mp_state
.mp_state
= KVM_MP_STATE_CHECK_STOP
;
2064 case S390_CPU_STATE_OPERATING
:
2065 mp_state
.mp_state
= KVM_MP_STATE_OPERATING
;
2067 case S390_CPU_STATE_LOAD
:
2068 mp_state
.mp_state
= KVM_MP_STATE_LOAD
;
2071 error_report("Requested CPU state is not a valid S390 CPU state: %u",
2076 ret
= kvm_vcpu_ioctl(CPU(cpu
), KVM_SET_MP_STATE
, &mp_state
);
2078 trace_kvm_failed_cpu_state_set(CPU(cpu
)->cpu_index
, cpu_state
,
2085 void kvm_s390_vcpu_interrupt_pre_save(S390CPU
*cpu
)
2087 unsigned int max_cpus
= MACHINE(qdev_get_machine())->smp
.max_cpus
;
2088 struct kvm_s390_irq_state irq_state
= {
2089 .buf
= (uint64_t) cpu
->irqstate
,
2090 .len
= VCPU_IRQ_BUF_SIZE(max_cpus
),
2092 CPUState
*cs
= CPU(cpu
);
2095 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
2099 bytes
= kvm_vcpu_ioctl(cs
, KVM_S390_GET_IRQ_STATE
, &irq_state
);
2101 cpu
->irqstate_saved_size
= 0;
2102 error_report("Migration of interrupt state failed");
2106 cpu
->irqstate_saved_size
= bytes
;
2109 int kvm_s390_vcpu_interrupt_post_load(S390CPU
*cpu
)
2111 CPUState
*cs
= CPU(cpu
);
2112 struct kvm_s390_irq_state irq_state
= {
2113 .buf
= (uint64_t) cpu
->irqstate
,
2114 .len
= cpu
->irqstate_saved_size
,
2118 if (cpu
->irqstate_saved_size
== 0) {
2122 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_IRQ_STATE
)) {
2126 r
= kvm_vcpu_ioctl(cs
, KVM_S390_SET_IRQ_STATE
, &irq_state
);
2128 error_report("Setting interrupt state failed %d", r
);
2133 int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry
*route
,
2134 uint64_t address
, uint32_t data
, PCIDevice
*dev
)
2136 S390PCIBusDevice
*pbdev
;
2137 uint32_t vec
= data
& ZPCI_MSI_VEC_MASK
;
2140 DPRINTF("add_msi_route no pci device\n");
2144 pbdev
= s390_pci_find_dev_by_target(s390_get_phb(), DEVICE(dev
)->id
);
2146 DPRINTF("add_msi_route no zpci device\n");
2150 route
->type
= KVM_IRQ_ROUTING_S390_ADAPTER
;
2152 route
->u
.adapter
.summary_addr
= pbdev
->routes
.adapter
.summary_addr
;
2153 route
->u
.adapter
.ind_addr
= pbdev
->routes
.adapter
.ind_addr
;
2154 route
->u
.adapter
.summary_offset
= pbdev
->routes
.adapter
.summary_offset
;
2155 route
->u
.adapter
.ind_offset
= pbdev
->routes
.adapter
.ind_offset
+ vec
;
2156 route
->u
.adapter
.adapter_id
= pbdev
->routes
.adapter
.adapter_id
;
2160 int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry
*route
,
2161 int vector
, PCIDevice
*dev
)
2166 int kvm_arch_release_virq_post(int virq
)
2171 int kvm_arch_msi_data_to_gsi(uint32_t data
)
2176 static int query_cpu_subfunc(S390FeatBitmap features
)
2178 struct kvm_s390_vm_cpu_subfunc prop
= {};
2179 struct kvm_device_attr attr
= {
2180 .group
= KVM_S390_VM_CPU_MODEL
,
2181 .attr
= KVM_S390_VM_CPU_MACHINE_SUBFUNC
,
2182 .addr
= (uint64_t) &prop
,
2186 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2192 * We're going to add all subfunctions now, if the corresponding feature
2193 * is available that unlocks the query functions.
2195 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PLO
, prop
.plo
);
2196 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING
, features
)) {
2197 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PTFF
, prop
.ptff
);
2199 if (test_bit(S390_FEAT_MSA
, features
)) {
2200 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMAC
, prop
.kmac
);
2201 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMC
, prop
.kmc
);
2202 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KM
, prop
.km
);
2203 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KIMD
, prop
.kimd
);
2204 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KLMD
, prop
.klmd
);
2206 if (test_bit(S390_FEAT_MSA_EXT_3
, features
)) {
2207 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PCKMO
, prop
.pckmo
);
2209 if (test_bit(S390_FEAT_MSA_EXT_4
, features
)) {
2210 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMCTR
, prop
.kmctr
);
2211 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMF
, prop
.kmf
);
2212 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMO
, prop
.kmo
);
2213 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PCC
, prop
.pcc
);
2215 if (test_bit(S390_FEAT_MSA_EXT_5
, features
)) {
2216 s390_add_from_feat_block(features
, S390_FEAT_TYPE_PPNO
, prop
.ppno
);
2218 if (test_bit(S390_FEAT_MSA_EXT_8
, features
)) {
2219 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KMA
, prop
.kma
);
2221 if (test_bit(S390_FEAT_MSA_EXT_9
, features
)) {
2222 s390_add_from_feat_block(features
, S390_FEAT_TYPE_KDSA
, prop
.kdsa
);
2224 if (test_bit(S390_FEAT_ESORT_BASE
, features
)) {
2225 s390_add_from_feat_block(features
, S390_FEAT_TYPE_SORTL
, prop
.sortl
);
2227 if (test_bit(S390_FEAT_DEFLATE_BASE
, features
)) {
2228 s390_add_from_feat_block(features
, S390_FEAT_TYPE_DFLTCC
, prop
.dfltcc
);
2233 static int configure_cpu_subfunc(const S390FeatBitmap features
)
2235 struct kvm_s390_vm_cpu_subfunc prop
= {};
2236 struct kvm_device_attr attr
= {
2237 .group
= KVM_S390_VM_CPU_MODEL
,
2238 .attr
= KVM_S390_VM_CPU_PROCESSOR_SUBFUNC
,
2239 .addr
= (uint64_t) &prop
,
2242 if (!kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2243 KVM_S390_VM_CPU_PROCESSOR_SUBFUNC
)) {
2244 /* hardware support might be missing, IBC will handle most of this */
2248 s390_fill_feat_block(features
, S390_FEAT_TYPE_PLO
, prop
.plo
);
2249 if (test_bit(S390_FEAT_TOD_CLOCK_STEERING
, features
)) {
2250 s390_fill_feat_block(features
, S390_FEAT_TYPE_PTFF
, prop
.ptff
);
2252 if (test_bit(S390_FEAT_MSA
, features
)) {
2253 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMAC
, prop
.kmac
);
2254 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMC
, prop
.kmc
);
2255 s390_fill_feat_block(features
, S390_FEAT_TYPE_KM
, prop
.km
);
2256 s390_fill_feat_block(features
, S390_FEAT_TYPE_KIMD
, prop
.kimd
);
2257 s390_fill_feat_block(features
, S390_FEAT_TYPE_KLMD
, prop
.klmd
);
2259 if (test_bit(S390_FEAT_MSA_EXT_3
, features
)) {
2260 s390_fill_feat_block(features
, S390_FEAT_TYPE_PCKMO
, prop
.pckmo
);
2262 if (test_bit(S390_FEAT_MSA_EXT_4
, features
)) {
2263 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMCTR
, prop
.kmctr
);
2264 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMF
, prop
.kmf
);
2265 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMO
, prop
.kmo
);
2266 s390_fill_feat_block(features
, S390_FEAT_TYPE_PCC
, prop
.pcc
);
2268 if (test_bit(S390_FEAT_MSA_EXT_5
, features
)) {
2269 s390_fill_feat_block(features
, S390_FEAT_TYPE_PPNO
, prop
.ppno
);
2271 if (test_bit(S390_FEAT_MSA_EXT_8
, features
)) {
2272 s390_fill_feat_block(features
, S390_FEAT_TYPE_KMA
, prop
.kma
);
2274 if (test_bit(S390_FEAT_MSA_EXT_9
, features
)) {
2275 s390_fill_feat_block(features
, S390_FEAT_TYPE_KDSA
, prop
.kdsa
);
2277 if (test_bit(S390_FEAT_ESORT_BASE
, features
)) {
2278 s390_fill_feat_block(features
, S390_FEAT_TYPE_SORTL
, prop
.sortl
);
2280 if (test_bit(S390_FEAT_DEFLATE_BASE
, features
)) {
2281 s390_fill_feat_block(features
, S390_FEAT_TYPE_DFLTCC
, prop
.dfltcc
);
2283 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2286 static int kvm_to_feat
[][2] = {
2287 { KVM_S390_VM_CPU_FEAT_ESOP
, S390_FEAT_ESOP
},
2288 { KVM_S390_VM_CPU_FEAT_SIEF2
, S390_FEAT_SIE_F2
},
2289 { KVM_S390_VM_CPU_FEAT_64BSCAO
, S390_FEAT_SIE_64BSCAO
},
2290 { KVM_S390_VM_CPU_FEAT_SIIF
, S390_FEAT_SIE_SIIF
},
2291 { KVM_S390_VM_CPU_FEAT_GPERE
, S390_FEAT_SIE_GPERE
},
2292 { KVM_S390_VM_CPU_FEAT_GSLS
, S390_FEAT_SIE_GSLS
},
2293 { KVM_S390_VM_CPU_FEAT_IB
, S390_FEAT_SIE_IB
},
2294 { KVM_S390_VM_CPU_FEAT_CEI
, S390_FEAT_SIE_CEI
},
2295 { KVM_S390_VM_CPU_FEAT_IBS
, S390_FEAT_SIE_IBS
},
2296 { KVM_S390_VM_CPU_FEAT_SKEY
, S390_FEAT_SIE_SKEY
},
2297 { KVM_S390_VM_CPU_FEAT_CMMA
, S390_FEAT_SIE_CMMA
},
2298 { KVM_S390_VM_CPU_FEAT_PFMFI
, S390_FEAT_SIE_PFMFI
},
2299 { KVM_S390_VM_CPU_FEAT_SIGPIF
, S390_FEAT_SIE_SIGPIF
},
2300 { KVM_S390_VM_CPU_FEAT_KSS
, S390_FEAT_SIE_KSS
},
2303 static int query_cpu_feat(S390FeatBitmap features
)
2305 struct kvm_s390_vm_cpu_feat prop
= {};
2306 struct kvm_device_attr attr
= {
2307 .group
= KVM_S390_VM_CPU_MODEL
,
2308 .attr
= KVM_S390_VM_CPU_MACHINE_FEAT
,
2309 .addr
= (uint64_t) &prop
,
2314 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2319 for (i
= 0; i
< ARRAY_SIZE(kvm_to_feat
); i
++) {
2320 if (test_be_bit(kvm_to_feat
[i
][0], (uint8_t *) prop
.feat
)) {
2321 set_bit(kvm_to_feat
[i
][1], features
);
2327 static int configure_cpu_feat(const S390FeatBitmap features
)
2329 struct kvm_s390_vm_cpu_feat prop
= {};
2330 struct kvm_device_attr attr
= {
2331 .group
= KVM_S390_VM_CPU_MODEL
,
2332 .attr
= KVM_S390_VM_CPU_PROCESSOR_FEAT
,
2333 .addr
= (uint64_t) &prop
,
2337 for (i
= 0; i
< ARRAY_SIZE(kvm_to_feat
); i
++) {
2338 if (test_bit(kvm_to_feat
[i
][1], features
)) {
2339 set_be_bit(kvm_to_feat
[i
][0], (uint8_t *) prop
.feat
);
2342 return kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2345 bool kvm_s390_cpu_models_supported(void)
2347 if (!cpu_model_allowed()) {
2348 /* compatibility machines interfere with the cpu model */
2351 return kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2352 KVM_S390_VM_CPU_MACHINE
) &&
2353 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2354 KVM_S390_VM_CPU_PROCESSOR
) &&
2355 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2356 KVM_S390_VM_CPU_MACHINE_FEAT
) &&
2357 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2358 KVM_S390_VM_CPU_PROCESSOR_FEAT
) &&
2359 kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CPU_MODEL
,
2360 KVM_S390_VM_CPU_MACHINE_SUBFUNC
);
2363 void kvm_s390_get_host_cpu_model(S390CPUModel
*model
, Error
**errp
)
2365 struct kvm_s390_vm_cpu_machine prop
= {};
2366 struct kvm_device_attr attr
= {
2367 .group
= KVM_S390_VM_CPU_MODEL
,
2368 .attr
= KVM_S390_VM_CPU_MACHINE
,
2369 .addr
= (uint64_t) &prop
,
2371 uint16_t unblocked_ibc
= 0, cpu_type
= 0;
2374 memset(model
, 0, sizeof(*model
));
2376 if (!kvm_s390_cpu_models_supported()) {
2377 error_setg(errp
, "KVM doesn't support CPU models");
2381 /* query the basic cpu model properties */
2382 rc
= kvm_vm_ioctl(kvm_state
, KVM_GET_DEVICE_ATTR
, &attr
);
2384 error_setg(errp
, "KVM: Error querying host CPU model: %d", rc
);
2388 cpu_type
= cpuid_type(prop
.cpuid
);
2389 if (has_ibc(prop
.ibc
)) {
2390 model
->lowest_ibc
= lowest_ibc(prop
.ibc
);
2391 unblocked_ibc
= unblocked_ibc(prop
.ibc
);
2393 model
->cpu_id
= cpuid_id(prop
.cpuid
);
2394 model
->cpu_id_format
= cpuid_format(prop
.cpuid
);
2395 model
->cpu_ver
= 0xff;
2397 /* get supported cpu features indicated via STFL(E) */
2398 s390_add_from_feat_block(model
->features
, S390_FEAT_TYPE_STFL
,
2399 (uint8_t *) prop
.fac_mask
);
2400 /* dat-enhancement facility 2 has no bit but was introduced with stfle */
2401 if (test_bit(S390_FEAT_STFLE
, model
->features
)) {
2402 set_bit(S390_FEAT_DAT_ENH_2
, model
->features
);
2404 /* get supported cpu features indicated e.g. via SCLP */
2405 rc
= query_cpu_feat(model
->features
);
2407 error_setg(errp
, "KVM: Error querying CPU features: %d", rc
);
2410 /* get supported cpu subfunctions indicated via query / test bit */
2411 rc
= query_cpu_subfunc(model
->features
);
2413 error_setg(errp
, "KVM: Error querying CPU subfunctions: %d", rc
);
2417 /* PTFF subfunctions might be indicated although kernel support missing */
2418 if (!test_bit(S390_FEAT_MULTIPLE_EPOCH
, model
->features
)) {
2419 clear_bit(S390_FEAT_PTFF_QSIE
, model
->features
);
2420 clear_bit(S390_FEAT_PTFF_QTOUE
, model
->features
);
2421 clear_bit(S390_FEAT_PTFF_STOE
, model
->features
);
2422 clear_bit(S390_FEAT_PTFF_STOUE
, model
->features
);
2425 /* with cpu model support, CMM is only indicated if really available */
2426 if (kvm_s390_cmma_available()) {
2427 set_bit(S390_FEAT_CMM
, model
->features
);
2429 /* no cmm -> no cmm nt */
2430 clear_bit(S390_FEAT_CMM_NT
, model
->features
);
2433 /* bpb needs kernel support for migration, VSIE and reset */
2434 if (!kvm_check_extension(kvm_state
, KVM_CAP_S390_BPB
)) {
2435 clear_bit(S390_FEAT_BPB
, model
->features
);
2439 * If we have support for protected virtualization, indicate
2440 * the protected virtualization IPL unpack facility.
2442 if (cap_protected
) {
2443 set_bit(S390_FEAT_UNPACK
, model
->features
);
2446 /* We emulate a zPCI bus and AEN, therefore we don't need HW support */
2447 set_bit(S390_FEAT_ZPCI
, model
->features
);
2448 set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION
, model
->features
);
2450 if (s390_known_cpu_type(cpu_type
)) {
2451 /* we want the exact model, even if some features are missing */
2452 model
->def
= s390_find_cpu_def(cpu_type
, ibc_gen(unblocked_ibc
),
2453 ibc_ec_ga(unblocked_ibc
), NULL
);
2455 /* model unknown, e.g. too new - search using features */
2456 model
->def
= s390_find_cpu_def(0, ibc_gen(unblocked_ibc
),
2457 ibc_ec_ga(unblocked_ibc
),
2461 error_setg(errp
, "KVM: host CPU model could not be identified");
2464 /* for now, we can only provide the AP feature with HW support */
2465 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
,
2466 KVM_S390_VM_CRYPTO_ENABLE_APIE
)) {
2467 set_bit(S390_FEAT_AP
, model
->features
);
2471 * Extended-Length SCCB is handled entirely within QEMU.
2472 * For PV guests this is completely fenced by the Ultravisor, as Service
2473 * Call error checking and STFLE interpretation are handled via SIE.
2475 set_bit(S390_FEAT_EXTENDED_LENGTH_SCCB
, model
->features
);
2477 if (kvm_check_extension(kvm_state
, KVM_CAP_S390_DIAG318
)) {
2478 set_bit(S390_FEAT_DIAG_318
, model
->features
);
2481 /* strip of features that are not part of the maximum model */
2482 bitmap_and(model
->features
, model
->features
, model
->def
->full_feat
,
2486 static void kvm_s390_configure_apie(bool interpret
)
2488 uint64_t attr
= interpret
? KVM_S390_VM_CRYPTO_ENABLE_APIE
:
2489 KVM_S390_VM_CRYPTO_DISABLE_APIE
;
2491 if (kvm_vm_check_attr(kvm_state
, KVM_S390_VM_CRYPTO
, attr
)) {
2492 kvm_s390_set_attr(attr
);
2496 void kvm_s390_apply_cpu_model(const S390CPUModel
*model
, Error
**errp
)
2498 struct kvm_s390_vm_cpu_processor prop
= {
2501 struct kvm_device_attr attr
= {
2502 .group
= KVM_S390_VM_CPU_MODEL
,
2503 .attr
= KVM_S390_VM_CPU_PROCESSOR
,
2504 .addr
= (uint64_t) &prop
,
2509 /* compatibility handling if cpu models are disabled */
2510 if (kvm_s390_cmma_available()) {
2511 kvm_s390_enable_cmma();
2515 if (!kvm_s390_cpu_models_supported()) {
2516 error_setg(errp
, "KVM doesn't support CPU models");
2519 prop
.cpuid
= s390_cpuid_from_cpu_model(model
);
2520 prop
.ibc
= s390_ibc_from_cpu_model(model
);
2521 /* configure cpu features indicated via STFL(e) */
2522 s390_fill_feat_block(model
->features
, S390_FEAT_TYPE_STFL
,
2523 (uint8_t *) prop
.fac_list
);
2524 rc
= kvm_vm_ioctl(kvm_state
, KVM_SET_DEVICE_ATTR
, &attr
);
2526 error_setg(errp
, "KVM: Error configuring the CPU model: %d", rc
);
2529 /* configure cpu features indicated e.g. via SCLP */
2530 rc
= configure_cpu_feat(model
->features
);
2532 error_setg(errp
, "KVM: Error configuring CPU features: %d", rc
);
2535 /* configure cpu subfunctions indicated via query / test bit */
2536 rc
= configure_cpu_subfunc(model
->features
);
2538 error_setg(errp
, "KVM: Error configuring CPU subfunctions: %d", rc
);
2541 /* enable CMM via CMMA */
2542 if (test_bit(S390_FEAT_CMM
, model
->features
)) {
2543 kvm_s390_enable_cmma();
2546 if (test_bit(S390_FEAT_AP
, model
->features
)) {
2547 kvm_s390_configure_apie(true);
2551 void kvm_s390_restart_interrupt(S390CPU
*cpu
)
2553 struct kvm_s390_irq irq
= {
2554 .type
= KVM_S390_RESTART
,
2557 kvm_s390_vcpu_interrupt(cpu
, &irq
);
2560 void kvm_s390_stop_interrupt(S390CPU
*cpu
)
2562 struct kvm_s390_irq irq
= {
2563 .type
= KVM_S390_SIGP_STOP
,
2566 kvm_s390_vcpu_interrupt(cpu
, &irq
);
2569 bool kvm_arch_cpu_check_are_resettable(void)